Performs mechanical operations to build, repair and maintain plant machinery; such as machine parts where machinery requirements must hold close to the specifications; works from drawings or samples and uses machines such as grinders, hand tools and measuring instruments. WORKING CONDITIONS: Continuous physical activity throughout the workday such as climbing, balancing, stooping, reaching, standing, walking, pushing, pulling, lifting, hearing, talking, repetitive motion and moving objects weighing up to 100 lbs.